Thread: More Packet is Received Than Threaded Sender Sent

Questions :
I am running a client Server Program whose Sender and Receiver loop is given below .I have multi threaded Sender using OMP .As per My logic Receive should receive same amount of data send by Sender ,But its receiving more packet than Sender sent .I am not able to identify the Bug !!

Code:

/* 
Running As Follow : 
            gcc UTGen.c -o Sender
            gcc UTGen.c -o Receiver

             ./Receiver -m 0 -p 5000 -z 256 -P t

              export OMP_NUM_THREADS=4
            ./Sender -m 1 -s localhost -p 5000 -z 256 -T 10 -P t             
            */


      // Sender Code

                gettimeofday(&tv1, NULL);

      do 
{

#pragma omp parallel private(nthreads, tid)
 {

  /* Obtain thread number */
  tid = omp_get_thread_num();
   if (tid == 0) 

   {
    nthreads = omp_get_num_threads();
    printf("Number of threads = %d\n", nthreads);
    }
    #pragma omp critical
    {
    n = write(sockfd,buffer,packet_size);
    num_pkt_send++;
    TotalSend=TotalSend+n;
    }
    if (n < 0) 
    {
         error("ERROR writing to socket");
          exit(1);
    }
    printf("%d Bytes Send: %d\n",num_pkt_send,n);
    gettimeofday(&tv2, NULL);
    }
} while((tv2.tv_sec-tv1.tv_sec)<=Sen_Loop_time);

      // Receiver Code

             gettimeofday(&tv1, NULL);

        while(n>0)
        {
             n = read(newsockfd,buffer,packet_size);
             TotalRecv=TotalRecv+n;
             num_pkt_rec++;
             printf("%d Bytes Received: %d\n",num_pkt_rec ,n);       

        }
        gettimeofday(&tv2, NULL);

Are you trying to Say that ..Increased Data is due to Packet Overhead ....
which happen due to fragmentation of data ...